package com.xxx.system.interceptor;

import cn.hutool.core.util.StrUtil;
import cn.hutool.http.ContentType;
import com.xxx.system.jwt.JwtUtil;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component//
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if ("front".equals(request.getHeader("requestType"))){
            return true;//如果是前台门户的请求头,说明是前台门户的请求,暂时放行
        }

        String token = request.getHeader("token");

        if (StrUtil.isBlank(token)){
            response.setContentType(ContentType.JSON.toString());//设置内容类型,告诉别人我要返回自定义的json字符串
            response.getWriter().println("{\"success\":false,\"message\":\"toLogin\"}");//{"success":false,"message":"toLogin"}

            return false;//不放行
        }

        try {
            JwtUtil.parseJwtToken(token);
        } catch (Exception e) {
            e.printStackTrace();

            response.setContentType(ContentType.JSON.toString());//设置内容类型,告诉别人我要返回自定义的json字符串
            response.getWriter().println("{\"success\":false,\"message\":\"toLogin\"}");//{"success":false,"message":"toLogin"}

            return false;//不放行
        }

        return true;//放行
    }
}
